Hand-wheel for valves.



Patented Feb. l3, I900.

r. F. BISCHOFF.

HAND WHEEL FOR VALVES,

(Application filed Aug. 24, 1899.) No Model.)

FREDERICK F. BISOHOFF, OF CHICAGO, ILLINOIS.

HAND-WHEEL FOR VALVES.

SPECIFICATION forming part of Letters Patent No; 643,460, dated February13, 1900. Application filed August 24,1899. serial No. 728,385. (Nomodel.)

To all whom, it may concern.-

Beitknown that I,FREDERICK F.BISCHOFF, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illi nois,haveinvented certain new and useful Improvements in Hand-VVheels for Valves;and I do hereby declare the following to be a full, clear, and exactdescription of theinvention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to a novel construction in a hand-wheel for valvesand the like, the object being to provideacheap, light,durable, andornamental wheel which has a maxi; mum radiating surface to keep itconstantly cool; and it consists in the features of construction andcombinations of parts hereinafter fully described and claimed.

In the accompanying drawings, illustrating my invention, Figure 1 is aplan View of a hand-wheel constructed in accordance with my invention.Fig. 2 is a sectional view of the same on the line 2 2 of Fig. 1.

My invention consists of a hand wheel formed of sheet metal in twopieces A and B. Said part A consists of a circular plate having a squarecentral depression 0, and said part B likewise consists of a similarplate of larger diameter, also provided with a square central depressionD, in which and said depression O of part A a nut or square plate E, ofheavy metal, is held. The outer edge of said part B is provided with aplurality of slots F, each extending at an angle to an intersectingradial line, and is subsequently annularly dished adjacent said edge andlikewise annularly flanged, said flanged edge being subsequently bentover to form an annular hollow G at the edge of said part B. Said part Ais mounted upon said part Bbefore said flange is bent over, and the edgeof said flange is forced down upon said plate.-

A and soldered or otherwise secured thereto, thereby forming a completehand-wheel, said slots F serving as ventilating-openings for saidannular hollow G, thereby preventing the latter from becoming hot, andlikewise serve to give to said wheel a rough or practically milledsurface, whereby it can be more firmly gripped. Said slots F may also beformed by sawing through the felly after the wheel is' mental, affordinggood grip, and remaining always cool.

I claim as my invention 1. Ahand-wheel for valves, comprising two plateseach provided with a polygonal central depression adapted to receive aheavy plate, and an encircling hollow felly provided with openings forpermitting the free circulation of air therethrough, whereby the same iskept cool.

2. A hand-wheel for valves, comprising two plates each provided with apolygonal central depression adapted to receive a heavy plate, oneofsaid plates being of greater diameter than the other and having itsouter edge turned over to form a hollow felly in which the edge of saidsmaller plate is secured, and slots in said felly for ventilating thelatter to keep same cool, and form a gripping-surface thereon.

3. A hand-wheel for valves, comprising two plates each provided with apolygonal central 7 depression adapted to receive a heavy plate,

one of said plates being of greater diameter than the other and havingits outer edge turned over to form a hollow felly in which the edge ofsaid smaller plate is secured, and slots in said felly for ventilatingthe latter to keep same cool, and form a gripping-surface thereon, and acentral opening through said central depressions in said plates andthrough the plate therein to enable said wheel to be rigidly mounted ona valve-stem, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

FREDERICK F. BISOHOFF. Witnesses:

RUDOLPH W. LOTZ, ARTHUR 0. L012.

